Zigbee Light Bulbs has 16 million colors, through wifi connection, can change the red, blue, green three colors. The lights is high brightness and long life span, uniform, soft lighting is applied to the family restaurant bedroom, commercial space, entertainment. Smart Home Lights,Smart Home Color Led Lights ,Smart Color Led Bulb Light Shenzhen Zhuohao Intelligent Electronic Development Co., Ltd. , http://www.szactop-smart.com
Includ following devices:
1.1 RGB color light 8W
1.2 CT LED Bulb light
1.3 Smart light controller
1.4 light band
Steel pipe knowledge: GB seamless steel pipe
The national standard seamless steel tube is made by punching a steel ingot or a solid tube into a capillary tube, and then made by hot rolling, cold rolling or cold drawing. The national standard steel pipe has an important position in the steel pipe industry in China. According to incomplete statistics, China currently has about 240 national steel pipe production enterprises and about 250 seamless steel pipe units with an annual production capacity of about 4.5 million tons. From the point of view, <φ76, accounting for 35%, <φ159-650, accounting for 25%. From the perspective of varieties, general-purpose pipes are 1.9 million tons, accounting for 54%; petroleum pipes are 760,000 tons, accounting for 5.7%; hydraulic props and precision pipes are 150,000 tons, accounting for 4.3%; stainless pipes, bearing pipes, and automobile pipes total 50,000 Ton, accounting for 1.4%.